CN221162246U

CN221162246U - Wake-up circuit and controller of new energy automobile and new energy automobile

Info

Publication number: CN221162246U
Application number: CN202322596090.2U
Authority: CN
Inventors: 陈建军; 靳彦红; 杜恩利
Original assignee: Hefei Yangguang Electric Power Technology Co ltd
Current assignee: Hefei Yangguang Electric Power Technology Co ltd
Priority date: 2023-09-22
Filing date: 2023-09-22
Publication date: 2024-06-18
Anticipated expiration: 2033-09-22

Abstract

The utility model discloses a wake-up circuit of a new energy automobile, a controller and the new energy automobile. The power supply switch module is used for controlling whether the power supply circuit is electrified. The power distribution module is used for receiving at least two wake-up signals, and outputting a hard wire control signal according to the wake-up signals so as to control the conduction state of the power supply switch module. The charging communication module is used for receiving a charging signal sent by the charging interface and generating a first enabling signal according to the charging signal. The vehicle-mounted charging module is used for generating a preparation signal and a first power supply voltage according to the first enabling signal. The signal control output module is used for responding to the preparation signal to output the first power supply voltage, and the output signal of the signal control output module is a wake-up signal. The technical scheme provided by the utility model can enable the slow charge signal to be easily identified, improves the reliability of the wake-up circuit, and is beneficial to reducing the loss of the whole vehicle.

Description

Wake-up circuit and controller of new energy automobile and new energy automobile

Technical Field

The utility model relates to the technical field of new energy automobile control, in particular to a wake-up circuit and a controller of a new energy automobile and the new energy automobile.

Background

Along with the increase of high-voltage electric equipment in new energy automobiles, in order to improve the power density and reduce the cable cost, the prior art provides various controllers in an electric integrated form, including five-in-one controllers, eight-in-one controllers and the like. Such an all-in-one controller requires consideration of the sleep wakeup logic of each component in addition to integrating the high voltage topology between the electrical components.

The controller is in a dormant state when the vehicle is parked and shut down, and the gun end sends a control confirmation signal to the controller after the slow charging gun is inserted and confirmed with the vehicle-mounted charger completion signal. The control confirmation signal is a signal generated by dividing the voltage of the charging gun terminal through a resistor. The divided voltage is smaller, and the problem of abnormal recognition of the slow charge signal usually occurs; or before the charging gun is not pulled out, the confirmation signal is always present, so that the power distribution circuit cannot sleep, and the extra loss of the whole vehicle is increased.

Disclosure of utility model

The utility model provides a wake-up circuit of a new energy automobile, a controller and the new energy automobile, so that a slow charge signal is easy to identify, the reliability of the wake-up circuit is improved, and the loss of the whole automobile is reduced.

According to an aspect of the present utility model, there is provided a wake-up circuit for a new energy automobile, including:

and the power supply switch module is used for controlling whether the power supply circuit is electrified or not.

And the power distribution module is electrically connected with the power supply switch module. The power distribution module is used for receiving at least two wake-up signals, and outputting a hard wire control signal according to the wake-up signals so as to control the conduction state of the power supply switch module.

The charging communication module is used for receiving a charging signal sent by the charging interface and generating a first enabling signal according to the charging signal.

And the vehicle-mounted charging module is electrically connected with the charging communication module. The vehicle-mounted charging module is used for generating a preparation signal and a first power supply voltage according to the first enabling signal.

The first input end of the signal control output module is connected with the preparation signal, the second input end of the signal control output module is connected with the first power supply voltage, and the output end of the signal control output module is electrically connected with the power distribution module.

The signal control output module is used for responding to the preparation signal to output the first power supply voltage, and the output signal of the signal control output module is a wake-up signal.

Optionally, the signal control output module includes:

The control end of the first switch unit is connected with the preparation signal, and the first end of the first switch unit is grounded. The first switch unit is used for responding to the preparation signal and outputting a grounding signal from a second end of the first switch unit.

And the control end of the second switch unit is electrically connected with the second end of the first switch unit, and the first end of the second switch unit is connected with the first power supply voltage. The second switching unit is used for responding to the electric potential of the control end of the second switching unit to output the first power supply voltage from the second end of the second switching unit.

And the first end of the grounding unit is electrically connected with the second end of the second switch unit, and the second end of the grounding unit is grounded.

Optionally, the first switching unit includes: a first resistor, a first capacitor, and a first transistor. The first resistor is connected in parallel with the first capacitor, a first end of the first resistor is electrically connected with the control electrode of the first transistor, and a second end of the first resistor is grounded. The control electrode of the first transistor is connected with the preparation signal, the first electrode of the first transistor is grounded, and the second electrode of the first transistor is used as the second end of the first switch unit.

And/or the second switching unit comprises: the second resistor, the third resistor, the second capacitor and the second transistor. The first end of the second resistor is used as the control end of the second switch unit, the second end of the second resistor is electrically connected with the control electrode of the second transistor, the first end of the third resistor is connected with the first power supply voltage, the second end of the third resistor is electrically connected with the control electrode of the second transistor, the first end of the second capacitor is connected with the first power supply voltage, and the second end of the second capacitor is grounded. The first pole of the second transistor is connected to the first power voltage, and the second pole of the second transistor is used as the second end of the second switch unit.

And/or, the grounding unit comprises: fourth and fifth resistances. The first end of the fourth resistor is electrically connected with the second end of the second switch unit, and the second end of the fourth resistor is grounded. The first end of the fifth resistor is electrically connected with the second end of the second switch unit, and the second end of the fifth resistor is used as an output end of the signal control output module.

Optionally, the first transistor is a MOS transistor, and the second transistor is a triode.

Optionally, the power distribution module includes:

And the input ends of the forward conduction units are respectively connected with a wake-up signal, and the output ends of the forward conduction units are connected to the same circuit node.

The input end of the voltage dividing unit is electrically connected with the circuit node, and the output end of the voltage dividing unit is used as the output end of the power distribution module.

Optionally, the forward conduction unit includes: the anode of the diode is used as the input end of the forward conduction unit, and the cathode of the diode is used as the output end of the forward conduction unit.

And/or the voltage dividing unit comprises: a sixth resistor and a seventh resistor. The first end of the sixth resistor is used as the input end of the voltage dividing unit, the second end of the sixth resistor is electrically connected with the first end of the seventh resistor, and the second end of the seventh resistor is grounded. The second end of the sixth resistor is used as the output end of the voltage dividing unit.

Optionally, the power supply switch module includes:

And the control end of the third switch unit is connected with a hard wire control signal, and the first end of the third switch unit is grounded.

And the control end of the fourth switch unit is electrically connected with the second end of the third switch unit, the first end of the fourth switch unit is connected with a power supply, and the second end of the fourth switch unit outputs the power supply.

Optionally, the third switching unit includes: and a third transistor, a control electrode of the third transistor being used as a control end of the third switch unit, a first electrode of the third transistor being used as a first end of the third switch unit, and a second electrode of the third transistor being used as a second end of the third switch unit.

And/or the fourth switching unit comprises: eighth resistor, ninth resistor and fourth transistor. The first end of the eighth resistor is electrically connected with the second end of the third switch unit, and the second end of the eighth resistor is electrically connected with the control electrode of the fourth transistor. A first terminal of the ninth resistor is electrically connected to the gate of the fourth transistor and a second terminal of the ninth resistor is electrically connected to the first terminal of the fourth transistor. The first pole of the fourth transistor is connected to the power supply, and the second pole of the fourth transistor outputs the power supply.

Optionally, the wake-up circuit of the new energy automobile further includes: the voltage conversion communication module and the voltage conversion module. The voltage conversion communication module is used for receiving the whole vehicle communication signal after the power supply line is awakened so as to control the voltage conversion module.

Optionally, the voltage conversion communication module is integrated with the charging communication module as a charging-voltage conversion communication module. The voltage conversion module and the vehicle-mounted charging module are integrated into a charging-voltage conversion module.

The charging-voltage conversion communication module is used for receiving a charging signal sent by the charging interface and generating a first enabling signal according to the charging signal.

The charge-voltage conversion module is connected with the first enabling signal and at least one other wake-up signal. The charge-voltage conversion module is used for generating a preparation signal and a first power supply voltage according to a wake-up signal including a first enable signal.

Optionally, the other wake-up signals include: at least one of a quick charge signal, a key signal, and a second enable signal.

Wherein the second enable signal is triggered by a wake-up frame on the communication bus.

Optionally, the wake-up circuit of the new energy automobile further includes: and a motor control module. The motor control module is used for receiving a whole vehicle communication signal after the power supply line is awakened so as to control the motor.

And/or the wake-up circuit further comprises: and an air conditioner control module. The air conditioner control module is used for receiving the whole vehicle communication signal after the power supply line is awakened so as to control the air conditioner.

And/or the wake-up circuit further comprises: and a battery heating control module. The battery heating control module is used for receiving a whole vehicle communication signal after the power supply line is awakened so as to control the battery heating module.

According to another aspect of the utility model, a controller of a new energy automobile is provided, which comprises the wake-up circuit provided by any embodiment of the utility model.

According to another aspect of the utility model, a new energy vehicle is provided, comprising a wake-up circuit or a controller provided by any embodiment of the utility model.

The technical scheme of the embodiment of the utility model is that a signal control output module is additionally arranged in the wake-up circuit, and the signal control output module is controlled after the charging communication module and the vehicle-mounted charging module are arranged to receive the charging signal. When the charging interface sends out a charging signal, the charging communication module is arranged to generate a first enabling signal, so that the vehicle-mounted charging module generates a preparation signal and a first power supply voltage to the power distribution module, and the low-amplitude slow charging signal is converted into a high-amplitude power supply voltage signal. Therefore, the wake-up signal received by the power distribution module is a stable slow-charge wake-up signal, and the power supply switch module can be controlled to be conducted stably, so that a power supply line is electrified, and the wake-up of the circuit is completed. And when the vehicle does not need to be charged actually, the vehicle-mounted charging module can perform failure judgment on the wake-up signal, and the power supply switch module is controlled to be switched off stably through the slow charging wake-up signal, so that dormancy of the circuit is completed. Therefore, the technical scheme of the embodiment of the utility model can enable the slow charge signal to be easily identified, improves the reliability of the wake-up circuit, and is beneficial to reducing the loss of the whole vehicle.

It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the utility model or to delineate the scope of the utility model. Other features of the present utility model will become apparent from the description that follows.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a wake-up circuit according to a comparative example according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of wake-up logic of a wake-up circuit according to an embodiment of the present utility model;

fig. 3 is a schematic circuit diagram of a signal control output module according to an embodiment of the present utility model;

fig. 4 is a schematic circuit diagram of a connection between a power distribution module and a power supply switch module according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of wake-up logic of another wake-up circuit according to an embodiment of the present utility model;

fig. 6 is a schematic diagram of wake-up logic of another wake-up circuit according to an embodiment of the present utility model.

Detailed Description

In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Fig. 1 is a schematic diagram of a wake-up circuit according to a comparative example, and as shown in fig. 1, the wake-up circuit includes a voltage division circuit 201 and a switch circuit 202.

Specifically, the charging signal CP is a detection signal sent by the power supply device received by the vehicle slow charging interface. When the vehicle is charged, the state of charge includes a readiness phase, an energy transfer phase, and an end shutdown phase. In the ready phase, the charge signal CP is switched from a 9V voltage signal to a 9V PWM signal; in the energy transfer phase, the charging signal CP is a PWM signal of 6V; at the end of the shutdown phase, the charge signal CP is switched from a PWM signal of 9V to a voltage signal of 9V. In the ready phase, in some cases, the voltage division circuit 201 divides the charging signal CP less, the voltage of the output confirmation signal is less, and even less than the on voltage of the switch circuit 202, so that the slow charging signal is identified abnormally, and the controller cannot wake up. In the energy transfer phase, in some cases, the voltage of the acknowledge signal output by the voltage dividing circuit 201 is larger, even larger than the on voltage of the switching circuit 202, resulting in high and low output of the switching circuit 202. At the end of the shutdown phase, in some cases, as long as the charging gun is not pulled out, the charging signal CP maintains the 9V voltage signal output, so that the controller cannot sleep, resulting in additional loss of the whole vehicle. It should be noted that the above cases may occur simultaneously, or only one of them may occur, which is related to the parameter setting of the voltage dividing circuit 201 and the magnitude of the charging signal.

Aiming at the technical problems, the utility model provides a wake-up circuit of a new energy automobile. Fig. 2 is a schematic diagram of wake-up logic of a wake-up circuit according to an embodiment of the present utility model. As shown in fig. 2, the wake-up circuit includes a power supply switch module 110, a power distribution module 120, a charging communication module 130, an on-vehicle charging module 140, and a signal control output module 150.

Alternatively, in fig. 2, KL31 is the negative pole of the battery power supply line and KL30 is the positive pole of the battery power supply line. The in-vehicle charging module 140 includes an in-vehicle charger 141 and a flyback circuit 142. The power distribution module 120 includes a power distribution circuit 121 and a flyback circuit 122. The wake-up circuit also includes a power distribution communication module 100. The power distribution communication module 100 outputs a second enable signal INH1.

The power switch module 110 is used to control whether the power supply line is energized. The power distribution module 120 is electrically connected to the power supply switch module 110 and receives the hard wire control signal ctl@pdu. The power distribution module 120 is configured to receive at least two wake-up signals (e.g., a key signal a+ and a fast charge signal KL 15), and output a hard wire control signal ctl@pdu according to the wake-up signals, so as to control the on state of the power supply switch module 110. The charging communication module 130 is configured to receive a charging signal CP sent by the charging interface, and generate a first enabling signal INH2 according to the charging signal CP. The in-vehicle charging module 140 is electrically connected with the charging communication module 130. The vehicle charging module 140 is configured to generate the preparation signal out_rdy and the first power supply voltage Vdd according to the first enable signal INH2. A first input terminal of the signal control output module 150 is connected to the ready signal out_rdy, a second input terminal of the signal control output module 150 is connected to the first power voltage Vdd, and an output terminal of the signal control output module 150 is electrically connected to the power distribution module 120. The signal control output module 150 is configured to output the first power voltage Vdd in response to the ready signal out_rdy, and the output signal of the signal control output module 150 is a WAKE-up signal wake_up@pdu.

Illustratively, the wake-up circuit operates on the following principle: when the power distribution module 120 receives the wake-up signal, a hard wire control signal ctl@pdu is output, the power supply switch module 110 is controlled to be conducted, and the power supply switch module 110 controls the power supply line to be electrified. The wake-up process is, for example, that when the charging communication module 130 receives a charging signal CP sent by the charging interface, the vehicle-mounted charging module 140 generates a first enable signal INH2 according to the charging signal CP, and the vehicle-mounted charging module 140 generates a preparation signal out_rdy according to the first enable signal INH2 and outputs a first power supply voltage Vdd. The amplitude of the first power supply voltage Vdd is adjustable, so that the voltage requirement of the power distribution module 120 on the wake-up signal can be met. The signal control output module 150 accesses the preparation signal out_rdy and the first power supply voltage Vdd, outputs the first WAKE-up_up@pdu to the power distribution module 120, and the power distribution module 120 controls the power supply switch module 110 to be turned on and controls the power supply line to be electrified. The sleep process is that, when the charge end condition of the vehicle device is reached or the driver has implemented an instruction to stop charging the vehicle, the voltage of the preparation signal out_rdy output by the vehicle-mounted charging module 140 jumps even if the charging gun is not pulled OUT, and the signal controls the level of the first WAKE-up_up@pdu output by the output module 150 to change, so that the power distribution module 120 enters the sleep state.

In the technical solution of this embodiment, a signal control output module 150 is added to the wake-up circuit, and after the charging communication module 130 and the vehicle charging module 140 are set to receive the charging signal CP, the signal control output module 150 is controlled. Thus, when the charging interface sends the charging signal CP, the charging communication module 130 is configured to generate the first enabling signal INH2, so that the vehicle charging module 140 generates the preparation signal out_rdy and the first power supply voltage Vdd to the power distribution module 120, which is favorable for converting the low-amplitude slow charging signal into the high-amplitude power supply voltage signal. Therefore, the WAKE-up_up@pdu received by the power distribution module 120 is a stable slow-charge WAKE-up signal, and can stably control the power supply switch module 110 to be turned on, so that the power supply line is electrified, and the WAKE-up of the circuit is completed. And when the vehicle does not need to be charged actually, the vehicle-mounted charging module 140 can perform failure judgment on the WAKE-up_up@PDU, and the power supply switch module 110 is controlled to be switched off stably through the slow charge WAKE-up signal, so that dormancy of the circuit is completed. Therefore, the technical scheme of the embodiment can enable the slow charge signal to be easily identified, improves the reliability of the wake-up circuit, and is beneficial to reducing the loss of the whole vehicle.

Fig. 3 is a schematic circuit diagram of a signal control output module 150 according to an embodiment of the present utility model, referring to fig. 3, on the basis of the above embodiments, optionally, the signal control output module 150 includes:

And a control terminal of the first switching unit 151 is connected to the preparation signal out_rdy, and a first terminal of the first switching unit 151 is grounded. The first switching unit 151 is configured to output a ground signal from the second terminal of the first switching unit 151 in response to the preparation signal out_rdy.

And a control terminal of the second switching unit 152 is electrically connected to the second terminal of the first switching unit 151, and a first terminal of the second switching unit 152 is connected to the first power voltage Vdd. The second switch unit 152 is configured to output the first power voltage Vdd from the second terminal of the second switch unit 152 in response to the potential of the control terminal thereof.

And a grounding unit 153, a first end of the grounding unit 153 being electrically connected to a second end of the second switching unit 152, and a second end of the grounding unit 153 being grounded.

Specifically, the working process of the signal control output module 150 is as follows: the control terminal of the first switch unit 151 is connected to the preparation signal out_rdy, the preparation signal out_rdy controls the first switch unit 151 to be turned on, and the first terminal of the first switch unit 151 outputs a signal to the control terminal of the second switch unit 152 to control the second switch unit 152 to be turned on. The first terminal of the second switch unit 152 is connected to the first power voltage Vdd, and when the second switch unit 152 is turned on, the first power voltage Vdd is output from the second terminal of the second switch unit 152. The output signal is output to the power distribution module 120 after passing through the grounding unit 153, thereby controlling the power supply line to supply power. The first power voltage Vdd output by the second switch unit 152 is the first WAKE-up signal wake_up@pdu. The magnitude of which is, for example, 12V, greater than the charging signal CP output by the charging interface.

In this embodiment, by providing the first switch unit 151, the second switch unit 152, and the grounding unit 153 in the signal control output module 150, the on state of each switch unit can be controlled according to the preparation signal out_rdy, and a wake-up signal with a higher amplitude is output, so that the slow charge signal is further easy to identify, and the reliability of the wake-up circuit is improved.

With continued reference to fig. 3, on the basis of the above embodiments, optionally, the first switching unit 151 includes: a first resistor R1, a first capacitor C1 and a first transistor Q2. The first resistor R1 and the first capacitor C1 are connected in parallel, a first end of the first resistor R1 is electrically connected to the control electrode of the first transistor Q2, and a second end of the first resistor R1 is grounded. The control electrode of the first transistor Q2 is connected to the ready signal out_rdy, the first electrode of the first transistor Q2 is grounded, and the second electrode of the first transistor Q2 is used as the second terminal of the first switch unit 151.

The second switching unit 152 includes: a second resistor R2, a third resistor R3, a second capacitor C2 and a second transistor Q1. The first end of the second resistor R2 is used as the control end of the second switch unit 152, the second end of the second resistor R2 is electrically connected with the control electrode of the second transistor Q1, the first end of the third resistor R3 is connected with the first power supply voltage Vdd, the second end of the third resistor R3 is electrically connected with the control electrode of the second transistor Q1, the first end of the second capacitor C2 is connected with the first power supply voltage Vdd, and the second end of the second capacitor C2 is grounded. A first pole of the second transistor Q1 is connected to the first power voltage Vdd, and a second pole of the second transistor Q1 serves as a second terminal of the second switching unit 152.

The grounding unit 153 includes: a fourth resistor R4 and a fifth resistor R5. The first end of the fourth resistor R4 is electrically connected to the second end of the second switching unit 152, and the second end of the fourth resistor R4 is grounded. The first end of the fifth resistor R5 is electrically connected to the second end of the second switching unit 152, and the second end of the fifth resistor R5 serves as an output end of the signal control output module 150.

Illustratively, when the charging interface issues the slow charge signal CP, the ready signal out_rdy is high. The control electrode of the first transistor Q2 is connected to the ready signal out_rdy, and the ready signal out_rdy controls the first transistor Q2 to be turned on. The first electrode of the first transistor Q2 outputs a signal to the control electrode of the second transistor Q1 through the first resistor R1, and controls the second transistor Q1 to be saturated on. The first pole of the second transistor Q1 is connected to the first power supply voltage Vdd, and when the second transistor Q1 is turned on, the first power supply voltage Vdd is output to the power distribution module 120 from the second pole of the second transistor Q1, so as to control the power supply line to be electrified. The first power supply voltage Vdd output by the second transistor Q1 is a low level first WAKE-up signal wake_up@pdu. The magnitude of which is, for example, 12V, greater than the charging signal CP output by the charging interface. When the automobile is in a non-charging working condition, the preparation signal OUT_RDY defaults to a low level, and correspondingly, the first WAKE-up@PDU defaults to a low level. The resistor-capacitor circuit formed by the first resistor R1 and the first capacitor C1 can provide protection for the circuit and prevent the first transistor Q2 from being damaged; the resistor-capacitor circuit formed by the third resistor R3 and the second capacitor C2 can provide protection for the circuit and prevent the second transistor Q1 from being damaged. The voltage division grounding circuit formed by the fourth resistor R4 and the fifth resistor R5 can further provide protection for the circuit.

In this embodiment, by providing the first transistor Q2 in the first switch unit 151 and providing the second transistor Q1 in the second switch unit 152, the on state of each transistor can be controlled according to the preparation signal out_rdy, and a wake-up signal with a higher amplitude is output, so that the slow charge signal is further easy to identify, and the reliability of the wake-up circuit is improved. In addition, the first resistor R1, the first capacitor C1, the second resistor R2, the third resistor R3, the fourth resistor R4, the fifth resistor R5 and the second capacitor C2 are arranged to protect the circuit, so that the safety of the circuit is improved.

With continued reference to fig. 3, in the foregoing embodiments, optionally, the first transistor Q2 is a MOS transistor, and the second transistor Q1 is a triode.

Specifically, the gate of the MOS transistor is used as the control electrode of the first transistor Q2, the drain of the MOS transistor is used as the first electrode of the first transistor Q2, and the source of the MOS transistor is used as the second electrode of the first transistor Q2. The base of the triode is used as the control electrode of the second transistor Q1, the emitter of the triode is used as the first electrode of the second transistor Q1, and the collector of the triode is used as the second electrode of the second transistor Q1.

In this embodiment, the first transistor Q2 is a MOS transistor, and the second transistor Q1 is a triode, so that the circuit structure is simple, easy to implement, and beneficial to further improving the reliability of the wake-up circuit.

Note that, the first switching tube Q2 and the second switching tube Q1 may be MOS tubes or triodes, and may be selected according to actual requirements, which is not limited herein.

Fig. 4 is a schematic circuit diagram of a connection between a power distribution module and a power supply switch module according to an embodiment of the present utility model, referring to fig. 4, on the basis of the foregoing embodiments, optionally, the power distribution module 120 includes:

At least two forward conduction units 121, the input ends of the forward conduction units 121 are respectively connected with a wake-up signal, and the output ends of the forward conduction units 121 are connected to the same circuit node.

The voltage dividing unit 122, the input end of the voltage dividing unit 122 is electrically connected with the circuit node, and the output end of the voltage dividing unit 122 is used as the output end of the power distribution module 120.

Taking three forward conduction units 121 as an example, the power distribution module 120 includes a first forward conduction unit 121, a second forward conduction unit 121, and a third forward conduction unit 121. The input end of the first forward conduction unit 121 is connected to the key signal a+, the input end of the second forward conduction unit 121 is connected to the fast charge signal KL15, and the input end of the third forward conduction unit 121 is connected to the second wake-up signal INH. Each wake-up signal is output to the same circuit node through the output terminal of the corresponding forward conduction unit 121. Each wake-up signal is divided by the voltage dividing unit 122 and then output to the power supply switch module 110. After the power supply switch module 110 controls the line to be electrified, each controller finishes dormancy according to each wake-up signal to work.

In this embodiment, at least two forward conduction units 121 are disposed in the power distribution module 120, and the output ends of the forward conduction units are all connected to the same circuit node, so that each wake-up signal is connected to the same circuit node, the wake-up scheme of the controller is simplified, and the wiring of each controller is simplified.

With continued reference to fig. 4, on the basis of the above embodiments, optionally, the forward conduction unit 121 includes: diode D1, the anode of diode D1 is the input terminal of forward conduction unit 121, and the cathode of diode D1 is the output terminal of forward conduction unit 121.

The voltage dividing unit 122 includes: a sixth resistor R6 and a seventh resistor R7. The first end of the sixth resistor R6 is used as the input end of the voltage dividing unit 122, the second end of the sixth resistor R6 is electrically connected to the first end of the seventh resistor R7, and the second end of the seventh resistor R7 is grounded. The second terminal of the sixth resistor R6 is used as the output terminal of the voltage dividing unit 122.

Specifically, the anode of the diode D1 is connected to the wake-up signal, and the cathode of the diode D1 outputs the wake-up signal. The wake-up signal is divided by the sixth resistor R6 and the seventh resistor R7 and then output.

In this embodiment, by setting the diode D1 in the forward conduction unit 121, forward circulation of signals is ensured, and current of the controller is prevented from flowing back to the communication module, so that safe and reliable operation of the system is ensured; in addition, by providing the sixth resistor R6 and the seventh resistor R7 in the voltage dividing unit 122, the circuit is further protected.

With continued reference to fig. 4, the power supply switch module 110 may optionally include a third switch unit 111 and a fourth switch unit 112 on the basis of the above embodiments. The control terminal of the third switch unit 111 is connected to the hard wire control signal ctl@pdu, and the first terminal of the third switch unit 111 is grounded. The control end of the fourth switch unit 112 is electrically connected to the second end of the third switch unit 111, the first end of the fourth switch unit 112 is connected to the power supply KL30, and the second end of the fourth switch unit 112 outputs the power supply KL 30.

Specifically, the working process of the power supply switch module 110 is: the control terminal of the third switch unit 111 is connected to a hard wire control signal ctl@pdu, which controls the third switch unit 111 to be turned on. When the third switch unit 111 is turned on, the second terminal thereof outputs a signal to the control terminal of the fourth switch unit 112 to control the fourth switch unit 112 to be turned on. Meanwhile, when the first end of the fourth switch unit 112 is connected to the power supply KL30, the second end of the fourth switch unit 112 outputs a signal of the power supply KL30 when the fourth switch unit 112 is turned on, so as to control the power supply line to be electrified.

In this embodiment, by providing the third switch unit 111 and the fourth switch unit 112 in the power supply switch module 110, the on state of each switch unit can be controlled according to the hard wire control signal ctl@pdu, and the power supply KL30 is output by signals, so that the reliability of the wake-up circuit is further improved.

With continued reference to fig. 4, on the basis of the above embodiments, optionally, the third switching unit 111 includes: and a third transistor Q3, a control electrode of the third transistor Q3 is used as a control terminal of the third switching unit 111, a first electrode of the third transistor Q3 is used as a first terminal of the third switching unit 111, and a second electrode of the third transistor Q3 is used as a second terminal of the third switching unit 111.

The fourth switching unit 112 includes: an eighth resistor R8, a ninth resistor R9, and a fourth transistor Q4. The first terminal of the eighth resistor R8 is electrically connected to the second terminal of the third switching unit 111, and the second terminal of the eighth resistor R8 is electrically connected to the gate of the fourth transistor Q4. A first terminal of the ninth resistor R9 is electrically connected to the control electrode of the fourth transistor Q4, and a second terminal of the ninth resistor R9 is electrically connected to the first electrode of the fourth transistor Q4. The first pole of the fourth transistor Q4 is connected to the power supply KL30, and the second pole of the fourth transistor Q4 outputs the power supply KL30.

Specifically, the third switch unit 111 and the fourth switch unit 112 operate as follows: the control electrode of the third transistor Q3 is connected to a hard-wire control signal ctl@pdu, which controls the third transistor Q3 to be turned on. The first pole of the third transistor Q3 is connected to the ground signal, and the second pole of the third transistor Q3 outputs the control signal. The signal is divided by the eighth resistor R8 and the ninth resistor R9, and then input to the gate of the fourth transistor Q4, and the fourth transistor Q4 is controlled to be turned on. The first pole of the fourth transistor Q4 is connected to the power supply KL30, and when the fourth transistor Q4 is turned on, the second pole of the fourth transistor Q4 outputs a signal of the power supply KL30, thereby controlling the power supply line to be energized.

In the present embodiment, by providing the third transistor Q3 in the third switching unit 111 and providing the eighth resistor R8, the ninth resistor R9, and the fourth transistor Q4 in the fourth switching unit 112, the on state of each transistor can be controlled according to the response of the hard wire control signal ctl@pdu, and the power supply KL30 can be signal-output. By this arrangement, the reliability of the wake-up circuit can be further improved.

Fig. 5 is a schematic diagram of wake-up logic of another wake-up circuit according to an embodiment of the present utility model, referring to fig. 5, on the basis of the foregoing embodiments, optionally, the wake-up circuit further includes: a voltage conversion communication module 160 and a voltage conversion module 170. The voltage conversion communication module is configured to receive the vehicle communication signal after the power supply line wakes up, so as to control the voltage conversion module 170.

Specifically, when the power supply line is powered on after receiving the wake-up signal, the voltage conversion communication module 160 ends the sleep, starts to receive the communication signal of the whole vehicle, and controls the voltage conversion module 170.

In this embodiment, by providing the voltage conversion communication module 160 and the voltage conversion module 170, the voltage conversion module 170 is awakened in time, and the voltage is converted according to the communication signal. By this arrangement, the reliability of the wake-up circuit can be further improved.

Fig. 6 is a schematic diagram of wake-up logic of another wake-up circuit according to an embodiment of the present utility model, referring to fig. 6, the voltage conversion communication module 160 and the charging communication module 130 are optionally integrated into a charging-voltage conversion communication module 180 based on the above embodiments. The voltage conversion module 170 is integrated with the in-vehicle charging module 140 as a charge-to-voltage conversion module 190.

The charge-voltage conversion communication module 180 is configured to receive a charge signal CP sent by the charge interface, and generate a first enable signal INH2 according to the charge signal CP.

The charge-to-voltage conversion module 190 accesses the first enable signal INH2 and at least one other wake-up signal. The charge-voltage conversion module 190 is configured to generate the preparation signal out_rdy and the first power supply voltage Vdd according to a wake-up signal including the first enable signal INH 2.

Illustratively, when the charge-voltage conversion communication module 180 receives the charge signal CP sent by the charge interface, a first enable signal INH2 is generated according to the signal and output to the charge-voltage conversion module 190. The charge-voltage conversion module 190 accesses the first enable signal INH2 and other wake-up signals. The charge-voltage conversion module 190 generates the preparation signal out_rdy and the first power supply voltage Vdd according to the wake-up signal including the first enable signal INH 2.

In the present embodiment, by integrating the voltage conversion communication module 160 with the charging communication module 130 into the charging-voltage conversion communication module 180, wiring and hardware resources are simplified, and signals are also not easily disturbed. By integrating the voltage conversion module 170 with the vehicle-mounted charging module 140 into the charge-voltage conversion module 190, the circuit structure is simplified, so that the control circuit of the controller is clearer and easier to implement.

With continued reference to fig. 6, on the basis of the above embodiments, optionally, other wake-up signals include: at least one of the quick charge signal a+, the key signal KL15 and the second enable signal INH 1.

Wherein the second enable signal INH1 is triggered by a wake-up frame on the communication bus.

Illustratively, when the key signal KL15 is received, the power supply line is energized, and each flyback circuit is energized to begin normal operation. At this time, all modules can normally communicate, and wake-up is realized. When the communication bus is triggered by the wake-up frame, the power distribution communication module 100 outputs a second enabling signal INH1, the power supply line is electrified, the flyback power supplies are electrified, and the modules start to work normally. Likewise, the fast charge signal a+ may also wake up the circuit. It should be noted that the first enable signal INH2 may also be triggered by a wake-up frame on the communication bus.

In this embodiment, by triggering the fast charge signal a+, the key signal KL15 and the second enable signal INH1, the wake-up circuit provided in the above embodiments can wake up each controller in the automobile, so as to realize various controls on the automobile, and further improve the reliability of the wake-up circuit.

With continued reference to fig. 6, on the basis of the above embodiments, optionally, the wake-up circuit further includes: a motor control module 1100, an air conditioning control module 1110, and a battery heating control module 1120.

Optionally, the motor control module 1100 includes a motor control communication module 1101, a motor 1102, and a flyback circuit 1103. The air conditioner control module 1110 includes an air conditioner control communication module 1111, an air conditioner 1112, and a flyback circuit 1113. The battery heating control module 1120 includes a battery heating control communication module 1121, a battery heating module 1122, and a flyback circuit 1123.

The motor control module 1100 is configured to receive a vehicle communication signal after the power line wakes up, so as to control the motor 1102. The air conditioner control module 1110 is configured to receive a vehicle communication signal after the power supply line wakes up, so as to control the air conditioner 1112. The battery heating control module 1120 is configured to receive a vehicle communication signal after the power line wakes up, so as to control the battery heating module 1122.

Specifically, after the power supply line wakes up, the motor control module 1100 ends sleep, starts to receive the vehicle communication signal, and controls the start, stop, or rotation speed of the motor 1102. The air conditioner control module 1110 ends sleep, begins receiving the vehicle communication signal, and controls the activation and deactivation of the air conditioner 1112. The battery heating control module 1120 ends the sleep, and starts to receive the whole vehicle communication signal, and controls the on-off state of the battery heating module 1122. In this embodiment, by setting the motor control module 1100, the air conditioner control module 1110 and the battery heating module 1120, the motor 1102, the air conditioner 1112 and the battery heating module 1122 are controlled after the power supply line is awakened respectively under the condition of no awakening source, so that the energy consumption can be reduced, the awakening scheme is simplified, the various control modules are prevented from being awakened, and the hardware resources are saved.

The embodiment of the utility model also provides a controller of the new energy automobile, which comprises the wake-up circuit provided by any embodiment of the utility model. The controller of the new energy automobile provided by the embodiment of the utility model has the beneficial effects of the wake-up circuit provided by any embodiment of the utility model, and the technical principle and the generated beneficial effects are similar and are not repeated.

The embodiment of the utility model also provides a new energy automobile, which comprises the wake-up circuit provided by any embodiment of the utility model or the controller of the new energy automobile provided by any embodiment of the utility model. The controller of the new energy automobile provided by the embodiment of the utility model has the beneficial effects of the wake-up circuit or the controller of the new energy automobile provided by any embodiment of the utility model, and the technical principle and the generated beneficial effects are similar and are not repeated.

It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present utility model may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present utility model are achieved, and the present utility model is not limited herein.

The above embodiments do not limit the scope of the present utility model. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included in the scope of the present utility model.

Claims

1. A wake-up circuit of a new energy automobile, comprising:

the power supply switch module is used for controlling whether the power supply circuit is electrified or not;

The power distribution module is electrically connected with the power supply switch module; the power distribution module is used for receiving at least two wake-up signals, and outputting a hard wire control signal according to the wake-up signals so as to control the conduction state of the power supply switch module;

The charging communication module is used for receiving a charging signal sent by the charging interface and generating a first enabling signal according to the charging signal;

The vehicle-mounted charging module is electrically connected with the charging communication module; the vehicle-mounted charging module is used for generating a preparation signal and a first power supply voltage according to the first enabling signal;

The first input end of the signal control output module is connected with the preparation signal, the second input end of the signal control output module is connected with the first power supply voltage, and the output end of the signal control output module is electrically connected with the power distribution module;

The signal control output module is used for responding to the preparation signal to output the first power supply voltage, and the output signal of the signal control output module is the wake-up signal.

2. The wake-up circuit of a new energy automobile according to claim 1, wherein the signal control output module comprises:

The control end of the first switch unit is connected with the preparation signal, and the first end of the first switch unit is grounded; the first switch unit is used for responding to the preparation signal and outputting a grounding signal from a second end of the first switch unit;

The control end of the second switch unit is electrically connected with the second end of the first switch unit, and the first end of the second switch unit is connected with the first power supply voltage; the second switch unit is used for responding to the potential of the control end of the second switch unit to output the first power supply voltage from the second end of the second switch unit;

3. The wake-up circuit of a new energy automobile according to claim 2, wherein the first switching unit includes: a first resistor, a first capacitor and a first transistor; the first resistor and the first capacitor are connected in parallel, a first end of the first resistor is electrically connected with the control electrode of the first transistor, and a second end of the first resistor is grounded; the control electrode of the first transistor is connected with the preparation signal, the first electrode of the first transistor is grounded, and the second electrode of the first transistor is used as the second end of the first switch unit;

And/or, the second switching unit includes: the second resistor, the third resistor, the second capacitor and the second transistor; the first end of the second resistor is used as the control end of the second switch unit, the second end of the second resistor is electrically connected with the control electrode of the second transistor, the first end of the third resistor is connected with the first power supply voltage, the second end of the third resistor is electrically connected with the control electrode of the second transistor, the first end of the second capacitor is connected with the first power supply voltage, and the second end of the second capacitor is grounded; a first electrode of the second transistor is connected to the first power supply voltage, and a second electrode of the second transistor is used as a second end of the second switch unit;

And/or, the grounding unit comprises: a fourth resistor and a fifth resistor; the first end of the fourth resistor is electrically connected with the second end of the second switch unit, and the second end of the fourth resistor is grounded; the first end of the fifth resistor is electrically connected with the second end of the second switch unit, and the second end of the fifth resistor is used as an output end of the signal control output module.

4. The wake-up circuit of claim 3, wherein the first transistor is a MOS transistor and the second transistor is a transistor.

5. The wake-up circuit of a new energy automobile of claim 1, wherein the power distribution module comprises:

The input ends of the forward conduction units are respectively connected with a wake-up signal, and the output ends of the forward conduction units are connected to the same circuit node;

And the input end of the voltage division unit is electrically connected with the circuit node, and the output end of the voltage division unit is used as the output end of the power distribution module.

6. The wake-up circuit of a new energy automobile according to claim 5, wherein the forward conduction unit comprises: the anode of the diode is used as an input end of the forward conduction unit, and the cathode of the diode is used as an output end of the forward conduction unit;

And/or, the voltage dividing unit comprises: a sixth resistor and a seventh resistor; the first end of the sixth resistor is used as the input end of the voltage dividing unit, the second end of the sixth resistor is electrically connected with the first end of the seventh resistor, and the second end of the seventh resistor is grounded; the second end of the sixth resistor is used as the output end of the voltage dividing unit.

7. The wake-up circuit of a new energy automobile according to claim 1, wherein the power supply switch module comprises:

The control end of the third switch unit is connected with the hard wire control signal, and the first end of the third switch unit is grounded;

8. The wake-up circuit of a new energy automobile according to claim 7, wherein the third switching unit includes: a third transistor, a control electrode of the third transistor being used as a control end of the third switch unit, a first electrode of the third transistor being used as a first end of the third switch unit, and a second electrode of the third transistor being used as a second end of the third switch unit;

And/or, the fourth switching unit comprises: an eighth resistor, a ninth resistor, and a fourth transistor; the first end of the eighth resistor is electrically connected with the second end of the third switch unit, and the second end of the eighth resistor is electrically connected with the control electrode of the fourth transistor; a first end of the ninth resistor is electrically connected with the control electrode of the fourth transistor, and a second end of the ninth resistor is electrically connected with the first electrode of the fourth transistor; the first pole of the fourth transistor is connected to the power supply, and the second pole of the fourth transistor outputs the power supply.

9. The wake-up circuit of a new energy automobile according to claim 1, further comprising: a voltage conversion communication module and a voltage conversion module; the voltage conversion communication module is used for receiving a whole vehicle communication signal after the power supply line is awakened so as to control the voltage conversion module.

10. The wake-up circuit of a new energy automobile according to claim 9, wherein the voltage conversion communication module is integrated with the charging communication module as a charging-voltage conversion communication module; the voltage conversion module and the vehicle-mounted charging module are integrated into a charging-voltage conversion module;

the charging-voltage conversion communication module is used for receiving a charging signal sent by the charging interface and generating a first enabling signal according to the charging signal;

The charging-voltage conversion module is connected with the first enabling signal and at least one other wake-up signal; the charge-voltage conversion module is configured to generate a preparation signal and a first power supply voltage according to the wake-up signal including the first enable signal.

11. The wake-up circuit of a new energy automobile according to claim 10, wherein the other wake-up signals comprise: at least one of a quick charge signal, a key signal, and a second enable signal;

12. The wake-up circuit of a new energy automobile according to claim 1, further comprising: a motor control module; the motor control module is used for receiving a whole vehicle communication signal after the power supply line is awakened so as to control the motor;

And/or, the wake-up circuit further comprises: an air conditioner control module; the air conditioner control module is used for receiving a whole vehicle communication signal after the power supply line is awakened so as to control an air conditioner;

And/or, the wake-up circuit further comprises: a battery heating control module; the battery heating control module is used for receiving a whole vehicle communication signal after the power supply line is awakened so as to control the battery heating module.

13. A controller for a new energy vehicle, comprising a wake-up circuit according to any one of claims 1-12.

14. A new energy automobile, characterized by comprising: a wake-up circuit as claimed in any one of claims 1 to 12, or a controller as claimed in claim 13.